2112122221120 has 56 divisors (see below), whose sum is σ = 5053327651008. Its totient is φ = 840844838400.

The previous prime is 2112122221117. The next prime is 2112122221129. The reversal of 2112122221120 is 211222212112.

It is a super-2 number, since 2×2112122221120² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112122221129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15573196 + ... + 15708235.

It is an arithmetic number, because the mean of its divisors is an integer number (90237993768).

Almost surely, 2^{2112122221120} is an apocalyptic number.

2112122221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112122221120 is an abundant number, since it is smaller than the sum of its proper divisors (2941205429888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2112122221120 is a wasteful number, since it uses less digits than its factorization.

2112122221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31281659 (or 31281649 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2112122221120 its reverse (211222212112), we get a palindrome (2323344433232).

The spelling of 2112122221120 in words is "two trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty".